Bump opencv-python from 4.1.2.30 to 4.2.0.32

Bumps [opencv-python](https://github.com/skvark/opencv-python) from 4.1.2.30 to 4.2.0.32.
- [Release notes](https://github.com/skvark/opencv-python/releases)
- [Commits](https://github.com/skvark/opencv-python/commits)

---
updated-dependencies:
- dependency-name: opencv-python
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -6,7 +6,7 @@ gym==0.15.4
 kiwisolver==1.1.0
 matplotlib==3.1.2
 numpy==1.18.1
-opencv-python==4.1.2.30
+opencv-python==4.2.0.32
 Pillow==7.0.0
 pygame==1.9.6
 pyglet==1.3.2